//从并行端口读取打印机状态 function GetPrinterStatus:byte; asm MOV DX,$379; IN AL,DX; end; //获取打印机是否出错 function CheckPrinter:boolean; var temp:byte; begin temp:=GetPrinterStatus; Result:=not ( ((temp and $80)=0) //打印机忙 or ((temp and $20)<>0) //打印机缺纸 or ((temp and $10)=0) //打印机未联机 or ((temp and $08)=0) ); //打印机出错; end;声明,我没试过....
如何得到当前的打印机状态? http://www.delphibbs.com/delphibbs/dispq.asp?lid=64852 如何查询打印机状态? http://www.delphibbs.com/delphibbs/dispq.asp?lid=232399 转载 unit uPrinter;interface function CheckPrinter: boolean; function GetPrinterStatus: byte;implementation//从并行端口读取打印机状态 function GetPrinterStatus: byte; asm MOV DX,$378; IN AL,DX; end; //获取打印机是否出错function CheckPrinter: boolean; var temp: byte; begin temp := GetPrinterStatus; Result := not (((temp and $80) = 0) //打印机忙 or ((temp and $20) <> 0) //打印机缺纸 or ((temp and $10) = 0) //打印机未联机 or ((temp and $08) = 0)); //打印机出错; end;end.
function GetPrinterStatus:byte;
asm
MOV DX,$379;
IN AL,DX;
end;
//获取打印机是否出错
function CheckPrinter:boolean;
var
temp:byte;
begin
temp:=GetPrinterStatus;
Result:=not ( ((temp and $80)=0) //打印机忙
or ((temp and $20)<>0) //打印机缺纸
or ((temp and $10)=0) //打印机未联机
or ((temp and $08)=0) ); //打印机出错;
end;声明,我没试过....
http://www.delphibbs.com/delphibbs/dispq.asp?lid=64852
如何查询打印机状态?
http://www.delphibbs.com/delphibbs/dispq.asp?lid=232399
转载
unit uPrinter;interface
function CheckPrinter: boolean;
function GetPrinterStatus: byte;implementation//从并行端口读取打印机状态
function GetPrinterStatus: byte;
asm
MOV DX,$378;
IN AL,DX;
end;
//获取打印机是否出错function CheckPrinter: boolean;
var
temp: byte;
begin
temp := GetPrinterStatus;
Result := not (((temp and $80) = 0) //打印机忙
or ((temp and $20) <> 0) //打印机缺纸
or ((temp and $10) = 0) //打印机未联机
or ((temp and $08) = 0)); //打印机出错;
end;end.